50×0.9228是什么意思

Which of the following will lead Inventories to rise? A inventory—sales ratios are high. B economic activity begins to rebound. C inventory—sales ratios are low. 这题什么原理？

老师，此题没问。不过我想问，如果要算opportunity，是我图的蓝色部分还是红色部门。请老师明示，详细解答。谢谢。

老师好，请问为什么说残差项的期望值都等于0？

ABC Company sells computer parts by mail. A sample of 25 recent orders showed the mean time taken to ship out these orders was 45 hours with a sample standard deviation of 12 hours. Assuming the population is normally distributed, the 99% confidence interval for the population mean is: A 45 ± 2.80 hours. B 45 ± 6.98 hours. C 45 ± 6.71 hours. 是不是得有表才能做？2.797是怎么来的？

请问residual income multistage model的stage 2的公式是什么？需要（1+r)^t来折现吗？我搞不清楚t的关系。比如stage 2在t开始衰减，请问我算tv的时候，用的是RIt还是RIt-1？

为什么较低的通胀率会带来的real tax saving from deprecation 的增加和real after tax interest expense 的增加？

Investment outlay都包括哪些？固定资产投资和营运资本投资吗？是否扣减固定资产处置收入及税金？

老师好，这道题不是很理解。

老师这两题有什么区别，为什么第一题不选lower？